Shoulder pain from preeclampsia is typically a deep ache concentrated in the right shoulder, and it signals something serious happening in your liver. Unlike a pulled muscle or tension from sleeping wrong, this pain doesn’t improve with stretching, massage, or changing positions. It often appears alongside upper abdominal pain on the right side, just under the ribs, and can come on suddenly even if you’ve had no prior shoulder problems.
Where the Pain Is and What It Feels Like
The pain is usually felt in the right shoulder, though it can sometimes radiate into the neck. It tends to feel deep and persistent rather than sharp or stabbing, more like a constant pressure or ache that doesn’t let up. Some women describe it as a heaviness that sits in the shoulder and won’t go away regardless of position changes.
What makes this pain distinctive is that it has nothing to do with the shoulder joint itself. It’s what doctors call “referred pain,” meaning the sensation originates somewhere else in the body. In this case, the source is the liver, which sits under the ribs on your right side. When the liver becomes swollen or stressed, it irritates a nerve (the phrenic nerve) that also serves the shoulder area. Your brain interprets the signal as shoulder pain even though the problem is in your abdomen.
Why This Pain Points to the Liver
Preeclampsia can damage the liver as part of the disease’s progression. When blood pressure climbs dangerously high, small blood vessels in the liver can become inflamed or even bleed, causing the organ to swell. That swelling stretches the capsule surrounding the liver, producing pain that you feel both under your right ribs and in your right shoulder.
The Preeclampsia Foundation specifically notes that shoulder pain in this context “radiates from the liver under the right ribs.” This is why shoulder pain and upper right abdominal pain so often appear together. You might notice the belly pain first, with the shoulder ache developing hours or days later, or both may arrive at roughly the same time. In rare but serious cases, liver involvement can progress to a condition called HELLP syndrome, which involves the breakdown of red blood cells, elevated liver enzymes, and a drop in platelet count. The American Academy of Family Physicians recommends that any pregnant patient with preeclampsia who develops severe right upper quadrant pain, neck pain, or shoulder pain be evaluated with liver imaging, because these symptoms can indicate a liver hematoma (a collection of blood beneath the liver’s surface).
How It Differs From Normal Pregnancy Aches
Pregnancy causes plenty of legitimate shoulder and back discomfort. Your center of gravity shifts, your posture changes, and your ligaments loosen. But there are key differences that set preeclampsia-related shoulder pain apart:
- It doesn’t respond to rest or repositioning. Muscular shoulder pain typically eases when you lie down, apply heat, or stretch. Referred liver pain stays constant.
- It appears with other warning signs. Preeclampsia shoulder pain rarely shows up in isolation. You’ll often also have a persistent headache (sometimes with light sensitivity), swelling in the face or hands, vision changes like blurriness or seeing spots, or pain under your right ribs.
- It feels internal rather than muscular. The sensation is deep, not on the surface. It doesn’t worsen when you press on the shoulder or move your arm in a specific direction.
- It can come on suddenly. One published case described a 32-year-old woman who developed severe shoulder pain at 33 weeks while already hospitalized for preeclampsia. The onset was abrupt and intense, not a gradual buildup.
Other Symptoms That Typically Appear Alongside It
ACOG classifies shoulder pain as one of the “severe features” of preeclampsia, placing it in the same category as blood pressure readings of 160/110 or higher, abnormal kidney or liver function, low platelet counts, fluid in the lungs, vision changes, and severe headache. The presence of any one of these features changes how the condition is managed and usually accelerates the timeline for delivery.
The symptoms most commonly paired with shoulder pain are upper abdominal pain on the right side (sometimes described as a feeling of fullness or pressure rather than sharp pain), nausea or vomiting that mimics a stomach bug, and a headache that doesn’t respond to typical pain relief. Some women also notice sudden weight gain or puffiness in the face that looks different from the gradual swelling common in later pregnancy.
What to Do if You Feel It
MedlinePlus, the NIH’s patient resource, is direct on this point: contact your provider right away if you have pain in your right shoulder during pregnancy. This is not a “wait and see at your next appointment” symptom. It’s especially urgent if you’ve already been diagnosed with high blood pressure or preeclampsia, but it warrants a call even if your blood pressure has been normal up to this point, because preeclampsia can develop quickly.
Before you call, take note of when the pain started, whether it’s constant or comes and goes, and whether you’re experiencing any of the other symptoms listed above. If you have a home blood pressure cuff, take a reading. A systolic number (the top number) of 140 or higher, or a diastolic number (the bottom number) of 90 or higher, combined with new shoulder pain, gives your provider critical information fast. If your blood pressure is 160/110 or above with shoulder pain, go to the hospital rather than waiting for a callback.